Enhanced luminescence by tunable coupling of Eu3+ and Tb3+ in ZnAl2O4:Eu3+:Tb3+ phosphor synthesized by solution combustion method

被引：0
作者：
Naveen Verma
Bernabe Marí
Krishan Chander Singh
Jitender Jindal
Suprabha Yadav
Anuj Mittal
机构：
[1] Maharshi Dayanand University,Department of Chemistry
[2] Universitat Politècnica de València,Institut de Disseny per la Fabricació Automatitzada
来源：
Journal of the Australian Ceramic Society | 2019年 / 55卷
关键词：
Aluminate; Combustion method; Cross relaxation; Photoluminescence;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
ZnAl2O4:Eu3+ or Tb3+ (1 mol%) and ZnAl2O4:Eu3+/Tb3+ with varied concentrations of Eu3+ and Tb3+ were prepared by solution combustion method. The photoluminescence spectra of synthesized compounds shows that simultaneous doping of Tb3+ and Eu3+ causes enhancement in Eu3+ luminescence intensity. This indicates some energy transfer from Tb3+ to Eu3+. This phenomenon of Tb3+ → Eu3+ energy transfer, accomplishing enhanced intensity of Eu3+ ions, is attributed to the cross relaxation phenomenon, which is favored by overlap between the donor and acceptor transition. The energy is transferred to Eu3+ cascade rapidly via non-radiative transitions to 5D0 state. The synthesized compounds were characterized by XRD, SEM for their structural and morphological characteristics respectively.
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页码：179 / 185
页数：6
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